The 3 main problems I found

These shingles have lost between 45% and 70% of the granules that came on them. This is always the first sign that your roof is past its prime and may need replacing.

Throught the roof I could spot where the staples were popping through the shingles or pushing the shingles up. This can cause leaks by having open penetrations in your roof. In this picture the arrows are all pointing  to shingles that are popping up due to staple pops.

There was a hand full of shingles that the wind had blown and flipped backwards. This causes the tab on the shingles to either completely brake, crack, or crease causing the fiberglass to break in the shingle.